This blog post is NOT about writing in general. It's not about the craft of writing, or the many varied types of writing (fiction, memoir, biography, essay, marketing blog, etc).
Instead, it's a formula that Mr. Graham gives the reader:
>I believe the formula I've given you, importance + novelty + correctness + strength, is the recipe for a good essay.
For a good essay, maybe. For writing in general, no. It's formulaic, which may very well be a horrible approach depending on the context.